If Trump were serious about this he would be talking about how to create the conditions in this country where companies want to bring their manufacturing here.
That’s how it’s done.
Not by threats or force. If he tries to force them these companies will simply leave the country entirely.
A few ecomonic zone with low taxes, a threat to force tarriffs for cheap chinese electronics, a break on regulations, Lower mim. wage for start ups. Lots of way to make US factories a good idea.
Or make the business climate so attractive that they would never consider leaving in the first place.